CPA Guide
Top CPA Firms in Idaho
Find trusted, highly-rated Certified Public Accountants across Idaho. Independently reviewed and ranked by our editorial team.
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CPA Services in Idaho
Idaho has emerged as one of the fastest-growing states in the country, driven by migration from California and other high-cost states, growth in agriculture and technology, and a relatively low cost of living. The state’s income tax has been reduced significantly in recent years, making it more competitive while still funding essential state services.
Boise’s tech sector, southeastern Idaho’s agricultural economy, and the state’s growing manufacturing base create diverse tax planning needs. Idaho CPAs are well-versed in the issues facing new residents from other states, agricultural tax planning, and the financial needs of the state’s rapidly growing small business community.
Top 6 CPA Firms in Idaho
Ranked by our editorial scoring system based on verified ratings and review volume
#1
Roberts Hart & Co., CPAs
★★★★☆ (187 reviews)
📍 1200 W Cherry Ln STE 100, Meridian, ID 83642
📞 (208) 888-6501
Certified Public AccountantBookkeepingAccountant
#2
Keller CPAs
★★★★★ (135 reviews)
📍 2361 S Titanium Pl STE 100, Meridian, ID 83642
📞 (208) 887-9541
Certified Public AccountantBookkeepingAccountantTax Preparation
#3
JTC CPAs
★★★★☆ (169 reviews)
📍 6213 N Cloverdale Rd #100, Boise, ID 83713
📞 (208) 947-2400
Certified Public AccountantAccountantAccountingAuditor
#4
Montgomery & Associates, PLLC
★★★★★ (108 reviews)
📍 6200 N Meeker Pl #210, Boise, ID 83713
📞 (208) 375-2272
Certified Public AccountantAccountantAccountingBusiness To Business
#5
John, John & Hill
★★★★☆ (65 reviews)
📍 1830 John Adams Pkwy, Idaho Falls, ID 83401
📞 (208) 524-5171
AccountingAccountantBookkeepingCertified Public Accountant
#6
Mower CPA
★★★★☆ (69 reviews)
📍 1833 S Millennium Way Ste 100, Meridian, ID 83642
📞 (208) 342-5905
Tax Consultant
🏆 How We Selected These Firms
Our editorial team evaluates CPA firms across Idaho using a proprietary scoring model that considers:
✓ Google rating — only firms with 4.0 stars or higher are eligible
✓ Review volume — scored using a logarithmic formula to reward genuine review depth
✓ Verified address — firms must have a confirmed physical location
✓ No paid placements — rankings are editorial only, never paid
Last updated: 2025 | Data sourced from verified public business listings
Idaho CPA & Tax FAQ
Q: What is Idaho’s income tax rate?
Idaho has implemented a flat income tax rate of 5.8% for individuals and corporations, simplifying from a previous bracket system. The state has been actively reducing its tax rates as part of a multi-year reform effort, making Idaho more competitive with neighboring states. Idaho taxes residents on all income and non-residents on Idaho-source income.
Q: How does Idaho treat retirement income?
Idaho offers a deduction for retirement income for residents age 65 and older (or 62 and older if disabled), up to $47,934 for joint filers and $28,752 for single filers. Social Security benefits exempt from federal tax are also exempt from Idaho tax. Military retirement pay is fully deductible for Idaho income tax purposes.
Q: What is Idaho’s sales tax rate?
Idaho has a state sales tax of 6%, with some cities adding an additional 3% resort city tax in resort communities like Sun Valley and McCall. Idaho taxes most goods but generally exempts most services, groceries, and prescription drugs. There are important exemptions for farm equipment, manufacturing inputs, and pollution control equipment.
Q: Are there tax incentives for Idaho businesses?
Idaho offers a 3.5% investment tax credit on qualifying new business equipment and buildings, and a 5% research and development credit on qualifying R&D expenditures. The state also has a rural economic development credit and various tax incentives in designated enterprise zones. Idaho’s growing technology sector in Boise benefits from these credits.
Q: What should California transplants know about Idaho taxes?
Moving from California to Idaho can result in significant tax savings — from California’s 13.3% top rate to Idaho’s 5.8% flat rate. However, the transition year requires careful planning to properly report California-source income and Idaho income separately. You’ll need to file part-year resident returns in both states for the year of the move.
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